<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>success</title>
    <style>
        div{
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }
        div h1{
            font-size: 40px;
            line-height: 50px;
            font-weight: normal;
        }
        div input[type="button"]{
            padding: 5px;
            border-radius: 5px;
            background-color: #eee;
        }
    </style>
</head>
<body>
    <div>
        <h1>操作成功</h1>
        <input type="button" value="点击返回" onclick="history.go(-1);">
    </div>
</body>
</html>